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Lecture 27 - McMaster Physics and Astronomy
Lecture 27 - McMaster Physics and Astronomy

... 1. as the changing current flows through, the magnetic flux through the loop changes 2. this is opposed by induced emf in the loop which opposes the change in net magnetic flux 3. by Lentz’s law, the induced E-field opposes the current flow ...
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... 588240400. This model is equipped with a distribution circuit card that provides eight fuse protected distribution load positions. Each position can be fused within a range of 0 to 4 ...
ICprog-AVR 2.0 KANDA
ICprog-AVR 2.0 KANDA

... In-Circuit GmbH · Knigsbrcker Str. 73 · D-01099 Dresden Phone +49 3514266 850 · Fax ∼849 · Email [email protected] · www.ic-board.de SEPTEMBER 2006, DATASHEET VERSION 1.5 ...
Chapter 5_notes_Fall 2012
Chapter 5_notes_Fall 2012

... The most challenging task in the design of the output storage is that it delivers the required amount of power to the load in an efficient manner i.e., with as little as possible of power dissipation in the transistors at the output stage. The efficiency depends upon the way the output stage conduct ...
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... heard. When the loudspeaker L2 is temporarily disconnected, a student finds that the intensity of the sound heard at Z increases. He finds this difficult to understand, as disconnecting L2 presumably means that the total output energy from the loudspeakers decreases. Write a short note explaining th ...
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MAX1742/MAX1842 1A/2.7A, 1MHz, Step-Down Regulators with Synchronous Rectification and Internal Switches General Description

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Experiment 16-1 – Basic Direct Current (DC) Equipment
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... the table (Table #7) (You’ll have data for EACH lamp.) Connect another lamp in series with the others – there should now be three in series. Take note of the brightness of the three lamps in series (actually write down an observation.) Using the multimeter probes, touch the clips to the screws on EA ...
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... components in which the components are connected such that they provide a single path between two points. Short A circuit condition in which there is zero or an abnormally low resistance between two points; usually an inadvertent condition. Voltage divider A circuit consisting of series resistors ac ...
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... When you are billed for energy at your house the energy company (Consumer’s Energy) charges you per kilowatt hour used Kilowatt Hour – the amount of energy consumed in one hour at the rate of 1 kilowatt If the energy company charges 10 cents per kilowatt-hour, a 100W bulb can be used for 10 hours at ...
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... The AD584 can be operated in a 2-terminal Zener mode at a 5 V output and above. By connecting the input and the output, the AD584 can be used in this Zener configuration as a negative reference. The output of the AD584 is configured to sink or source currents. This means that small reverse currents ...
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... Carefully dip the entire strip into the solution to be measured, remove the strip from the solution. Compare the color of the center section to the numbered colors on the strip. The pH of the solution is the number with the matching color. Record the pH results in the observation column for Step 11. ...
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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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